Calexico, Calif.

Don Bartletti / Los Angeles Times

Display window glass, fractured in Sunday's earthquake, reflects an intersection in the old market district of Calexico. Many blocks of the popular border town's commercial district were closed and guarded by U.S. Border Patrol agents from the nearby Port of Entry.

Display window glass, fractured in Sunday's earthquake, reflects an intersection in the old market district of Calexico. Many blocks of the popular border town's commercial district were closed and guarded by U.S. Border Patrol agents from the nearby Port of Entry. (Don Bartletti / Los Angeles Times)

Display window glass, fractured in Sunday's earthquake, reflects an intersection in the old market district of Calexico. Many blocks of the popular border town's commercial district were closed and guarded by U.S. Border Patrol agents from the nearby Port of Entry.